1.1 Product Features L According to the hardness measurement principle, a variety of metal materials can be detected. L use large screen 1 6 0 * 8 0 graphics dot matrix LCD display, information rich, intuitive. L All Chinese display, menu type operation, simple operation and convenient. L with a white backlight display, easy to use in the dark light environment; with USB interface, Can be easily and quickly with the P C machine for data exchange and parameter settings. L a host can be used with 7 different impact devices to use, automatically identify the impact device type, No recalibration is required for replacement. L can store up to 5 0 0 groups (impact times 32 ~ 1) hardness measurement data, each group of data Including single measurement, average, measurement date, impact direction, number of times, material, Hardness and other information. L can be pre-set hardness value on the lower limit, out of range automatic alarm, user-friendly batch The need for testing. L The remaining power indicator on the LCD can display the remaining battery power in real time Display software calibration function. L Support for 'forged steel' materials, when tested with a D / D type C impact device Steel 'sample, you can directly read the HB value, without manual look-up table. L equipped with computer software, with transmission measurement results, measured value storage management, measured statistics Analysis, print measurement report, batch set instrument parameters and other rich features to meet the quality To ensure that activities and management of higher requirements. L has a professional, beautiful shell, compact, portable, high reliability, suitable for harsh Of the operating environment, anti - vibration, shock and electromagnetic interference; L Power supply with 4 A A (5) size of ordinary alkaline batteries, can work continuously Not less than 50 hours; with automatic sleep, automatic shutdown and other power-saving features; L Dimensions: 1 5 0 * 8 0 * 3 8 m m 1.2 The main purpose and scope of application 1.2.1 The main purpose L Mold cavity. L bearings and other parts. Failure Analysis of Pressure Vessels, Turbine Generators and Their Equipment. Heavy duty workpieces. • Installed mechanical or permanent assembly parts. • Workpiece with very small test space. L require a formal record of the test results. Materials division of metal material warehouse. L large parts of a wide range of multiple parts of the rapid test. Table 1 Configuration: 1.4 Working conditions Ambient temperature: Operating temperature -20 ~ +60 ℃; Storage temperature: -30 ℃ ~ +60 ℃ Relative humidity< 9 0 %; The surrounding environment without strong vibration, no strong magnetic field, no corrosive media and serious dust. 2. Structural characteristics and working principle 2.1 working principle With the impact of the provisions of the quality of the body in the spring With the next, to a certain rate of impact on the sample surface, Using a punch at a distance of 1 mm from the surface of the specimen Ratio of rebound velocity to impact velocity Calculate the hardness as follows: 1.3 Specifications Name Quantity Remarks 1 host a Taiwan 2 D-type impact device 1 only 3 standard block hardness of 1 block 4 nylon brush A 1 only 5 small support ring 1 only 6 AA (size 5) size alkaline batteries 4 only 7 copies of the manual 8 aluminum case a box 9 sets of data transmission processing software 10 One USB communication cable Select Configuration 11 nylon brush B G impact device 12 Shaped impact device and support ring see Table 3 and Schedule 4 Standard configuration Serial number Standard Test Method for Rockwell Hardness of Metals (1) GB / 717394-1998 |